The Delhi High Court today asked the Centre to "come out" with details of contracts it has with social media sites like Facebook and Twitter to ascertain whether these websites have licences to the intellectual property rights of content uploaded.

The BJP has challenged Congress president Sonia Gandhi and her son and deputy Rahul Gandhi to officially condemn comments made by their party leader Digvijaya Singh on Twitter today, saying a failure to do so will mean that he has spoken on their behalf.

Kerala government on Wednesday said no decision had been taken to make August 2, a Sunday, working day for government offices and educational institutions as a mark of respect to former President APJ Abdul Kalam following the state Chief Secretary's posts in social networking sites in this regard led to confusion.

Russian government-backed hackers who penetrated high-profile US government and defence industry computers this year used a method combining Twitter with data hidden in seemingly benign photographs, according to experts studying the campaign.